I notice you have a brass radiator.
Picture from your other thread.
http://www.peachparts.com/shopforum/restoration-projects-long-term-builds/360735-300td-turbo-1982-w123-011699-a.html#post3397272
The brass radiator is definitely not factory. Maybe it is a bit narrow and causing the oil cooler to be mounted towards the center more. This might be the reason why the oil lines are close to the belts.